Add buffer.cc and platform_handle.cc to mojo build am: d84255cc85 am: 40aea33754
am: b8ffaa1cb4

Change-Id: I66ea36698e94d2200a078876c1719078d6442ea3
diff --git a/Android.mk b/Android.mk
index e25dbc6..f2f18cb 100644
--- a/Android.mk
+++ b/Android.mk
@@ -154,6 +154,8 @@
 	mojo/public/cpp/bindings/lib/validation_context.cc \
 	mojo/public/cpp/bindings/lib/validation_errors.cc \
 	mojo/public/cpp/bindings/lib/validation_util.cc \
+	mojo/public/cpp/system/buffer.cc \
+	mojo/public/cpp/system/platform_handle.cc \
 	mojo/public/cpp/system/watcher.cc \
 
 LOCAL_CFLAGS := \